| Glens Falls to Orbetello | 4,095.06 mi (6,590.36 km) |
| Glens Falls to Oria | 4,444.97 mi (7,153.49 km) |
| Glens Falls to Oristano | 4,074.59 mi (6,557.42 km) |
| Glens Falls to Orta Nova | 4,329.97 mi (6,968.41 km) |
| Glens Falls to Orte | 4,144.58 mi (6,670.05 km) |
| Glens Falls to Ortona | 4,234.45 mi (6,814.69 km) |
| Glens Falls to Orvieto | 4,123.11 mi (6,635.51 km) |
| Glens Falls to Orzinuovi | 3,933.99 mi (6,331.15 km) |
| Glens Falls to Osimo | 4,152.54 mi (6,682.87 km) |
| Glens Falls to Ospitaletto | 3,934.42 mi (6,331.84 km) |
| Glens Falls to Ostuni | 4,433.35 mi (7,134.78 km) |
| Glens Falls to Ottaviano | 4,296.22 mi (6,914.09 km) |
| Glens Falls to Ovada | 3,906.22 mi (6,286.45 km) |
| Glens Falls to Ozieri | 4,067.58 mi (6,546.14 km) |
| Glens Falls to Paceco | 4,325.19 mi (6,960.72 km) |
